I could not find a Miller part so I called and was able to locate a hard to find part which they shipped and received in a few days.
Collection: Miller Regulators
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Miller 221-4210 REG,HPA,2-ST,50PSI,1/8 TB SS NDL CHR,CGA590
Vendor:Regular price $626.78Regular priceUnit price / per -
Miller 610-01090000 REG,HPB,1-ST,25PSI,1/4FNPT DPM CHR,CGA580
Vendor:Regular price $630.92Regular priceUnit price / per -
Miller 623-00000000 REG,HPB,2-ST,250PSI,1/4FNPT,1/4FNPT
Vendor:Regular price $632.55Regular priceUnit price / per -
Miller 632-0000 REG,HPB,LEC,50PSI,1/4FNPT,1/4FNPT
Vendor:Regular price $633.18Regular priceUnit price / per -
Miller 613-01090000 REG,HPB,1-ST,250PSI,1/4FNPT DPM CHR,CGA580
Vendor:Regular price $633.47Regular priceUnit price / per -
Miller 614-01020000 REG,HPB,1-ST,500PSI,1/4FNPT DPM CHR,CGA320
Vendor:Regular price $636.44Regular priceUnit price / per -
Miller 610-01060000 REG,HPB,1-ST,25PSI,1/4FNPT DPM CHR,CGA350
Vendor:Regular price $636.44Regular priceUnit price / per -
Miller 222-4210 REG,HPA,2-ST,100PSI,1/8 TB SS NDL CHR,CGA590
Vendor:Regular price $639.24Regular priceUnit price / per -
Miller 222-4209 REG,HPA,2-ST,100PSI,1/8 TB SS NDL CHR,CGA580
Vendor:Regular price $639.24Regular priceUnit price / per -
Miller 220-4210 REG,HPA,2-ST,15PSI,1/8 TB SS NDL CHR,CGA590
Vendor:Regular price $639.24Regular priceUnit price / per -
Miller 220-4209 REG,HPA,2-ST,15PSI,1/8 TB SS NDL CHR,CGA580
Vendor:Regular price $639.24Regular priceUnit price / per -
Miller 220-4206 REG,HPA,2-ST,15PSI,1/8 TB SS NDL CHR,CGA350
Vendor:Regular price $639.24Regular priceUnit price / per -
Miller 813-20090000 REG,HPAB,SLF VNT,500PSI,1/4MNPT NDL CHR,CGA580
Vendor:Regular price $639.80Regular priceUnit price / per -
Miller 620-00090000 REG,HPB,2-ST,25PSI,1/4FNPT,CGA580
Vendor:Regular price $643.02Regular priceUnit price / per -
Miller 613-02090000 REG,HPB,1-ST,250PSI,1/8 TB DPM CHR,CGA580
Vendor:Regular price $643.66Regular priceUnit price / per -
Miller 612-03080000 REG,HPB,1-ST,100PSI,1/4 TB DPM CHR,CGA540
Vendor:Regular price $643.66Regular priceUnit price / per -
Miller 612-03060000 REG,HPB,1-ST,100PSI,1/4 TB DPM CHR,CGA350
Vendor:Regular price $643.66Regular priceUnit price / per -
Miller 612-03020000 REG,HPB,1-ST,100PSI,1/4 TB DPM CHR,CGA320
Vendor:Regular price $643.66Regular priceUnit price / per -
Miller 621-00000000 REG,HPB,2-ST,50PSI,1/4FNPT,1/4FNPT
Vendor:Regular price $644.25Regular priceUnit price / per -
Miller 623-00090000 REG,HPB,2-ST,250PSI,1/4FNPT,CGA580
Vendor:Regular price $648.86Regular priceUnit price / per -
Miller 623-00050000 REG,HPB,2-ST,250PSI,1/4FNPT,CGA346
Vendor:Regular price $648.86Regular priceUnit price / per -
Miller 621-00060000 REG,HPB,2-ST,50PSI,1/4FNPT,CGA350
Vendor:Regular price $648.86Regular priceUnit price / per -
Miller 620-00000000 REG,HPB,2-ST,25PSI,1/4FNPT,1/4FNPT
Vendor:Regular price $651.06Regular priceUnit price / per -
Miller 631-0000 REG,HPB,LEC,10PSI,1/4FNPT,1/4FNPT
Vendor:Regular price $651.77Regular priceUnit price / per